LOBSTER SAUCE(The Art of Cookery, 1805)

Take a fine hen lobster, take out all the spawn, and bruise it in a mortar very fine, with a little butter; then take all the meat out of the claws and tail, and cut it in small square pieces;

put the spawn and meat in a stew-pan with a spoonful of anchovy liquor, and one spoonful of catchup, a blade of mace, a piece of a stick of horseradish, half a lemon, a gill of gravy, a little butter rolled in flour, just enough to thicken it;

put in half a pound of butter nicely melted, boil it gently up for six or seven minutes;

take out the horseradish, mace and lemon, and squeeze the juice of the lemon into the sauce; just simmer it up, and then put it in your boats.